Re: fuel pressure promblems
Regulators typically fail a bit differently - usually the internal vacuum diaphram will rupture, or some times it will regulate incorrectly and cause very high pressure. Could be a leaky injector or check valve at pump assembly (what year do you have?) allowing fuel to drain back forcing you to have to get the fuel back up to the rail.
1987 Ford Ranger Short Bed 5.0L/T-5 Project
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